You have been your customer's preferred supplier for decades. In the industry, that means a frequent order flow of parts for crushers, screen decks, teeth, knives and other HARDOX wear parts. Then suddenly there is a demand for something completely different from - say - the usual recipe, a sieve drum!
Our client, a leading recycling company, wanted to improve its existing separation plant by installing a more wear-resistant sieve drum. The current drum left much to be desired in terms of quality and proved far from being able to withstand the highly abrasive material flows. The new screen drum had to meet a number of extreme conditions, which also presented an interesting challenge for Geha Laverman.
When a problem is identified, it is important to carefully identify the patterns of wear, analyse where the wear originates and how it has spread. Specialists at Geha Laverman first examined the existing drum and carefully described the areas for improvement. Then the existing drum was measured very carefully. The sieve drum is part of an existing conveyor line; size and therefore fit are crucial.
Should the design and choice of materials also take into account the future? One of the questions always asked by the engineering department at Geha Laverman. A question that is also answered in consultation with the customer.
Based on the analysis of the current screen and the expectations the new screen to be built had to meet, all information was processed using SolidWorks, a CAD/CAM application.
A big advantage of SolidWorks is also that the design process and construction are very transparent for the customer. Not only in terms of dimensions but also in terms of spatial detail. SolidWorks also offers the ability to inspect the drum in 3D prior to production.
From the 'virtual' drawing board, the screen goes directly to the CNC cutting machines, which cut the individual components from the wear-resistant HARDOX 450 and HARDOX 400 sheet with very close dimensional tolerances.
The flat sheets were then rolled. Rolling is never automated and is particularly specialised craftsmanship. In this time-consuming process, the drum gets its round shape.
The six-metre-long drum, with a diameter of more than two metres, was transferred to the site by special transport. Assembly was completed by our client as agreed. Design, construction and assembly took place during this summer.
